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<h1 class="topictitle1">备份任务子任务阶段出现“内部错误”</h1>
<div><div class="section"><h4 class="sectiontitle">故障现象</h4><p>执行GaussDB T的增量/差异/日志备份操作时，任务失败，OceanProtect管理界面的任务详情中显示为“内部错误”。</p>
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<div class="section"><h4 class="sectiontitle">可能原因</h4><p>客户端所在主机的系统时间被多次更改，副本时间紊乱，导致系统查询最新副本出错。</p>
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<div class="section"><h4 class="sectiontitle">处理步骤</h4><ol><li><span>登录备份失败的数据库主机，使用Roach工具执行一次全量备份。</span></li><li><span>备份成功后，使用Roach工具执行一次增量备份。</span><p><ul><li>如果备份失败，提示：未找到最新全量副本，请重新执行全量备份。请执行<a href="#gaussdbT_00090__li237226172110">3</a>。</li><li>如果备份失败，出现其他提示，请联系华为技术支持工程师协助解决。</li></ul>
</p></li><li id="gaussdbT_00090__li237226172110"><a name="gaussdbT_00090__li237226172110"></a><a name="li237226172110"></a><span>检查所有GaussDB T主机时间是否一致。</span><p><ul><li>如果不一致，请修改主机时间，确保主机时间保持一致。</li><li>如果一致，请执行<a href="#gaussdbT_00090__li3919544132113">4</a>。</li></ul>
</p></li><li id="gaussdbT_00090__li3919544132113"><a name="gaussdbT_00090__li3919544132113"></a><a name="li3919544132113"></a><span>找到所有之前产生的副本，使用Roach工具删除所有副本。</span></li><li><span>在OceanProtect管理界面上，重新手动执行一次全量备份，再手动执行一次增量备份。</span><p><ul><li>如果增量备份成功，处理结束。</li><li>如果增量备份失败，请联系华为技术支持工程师协助解决。</li></ul>
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